From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from d03relay02.boulder.ibm.com (d03relay02.boulder.ibm.com [9.17.195.227]) by e33.co.us.ibm.com (8.13.8/8.13.8) with ESMTP id l32LuEog028404 for ; Mon, 2 Apr 2007 17:56:14 -0400 Received: from d03av02.boulder.ibm.com (d03av02.boulder.ibm.com [9.17.195.168]) by d03relay02.boulder.ibm.com (8.13.8/8.13.8/NCO v8.3) with ESMTP id l32LuE8Y044710 for ; Mon, 2 Apr 2007 15:56:14 -0600 Received: from d03av02.boulder.ibm.com (loopback [127.0.0.1]) by d03av02.boulder.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id l32LuDQX021890 for ; Mon, 2 Apr 2007 15:56:14 -0600 Subject: Re: [PATCH 1/4] x86_64: Switch to SPARSE_VIRTUAL From: Dave Hansen In-Reply-To: References: <20070401071024.23757.4113.sendpatchset@schroedinger.engr.sgi.com> <20070401071029.23757.78021.sendpatchset@schroedinger.engr.sgi.com> <200704011246.52238.ak@suse.de> <1175544797.22373.62.camel@localhost.localdomain> <1175548086.22373.99.camel@localhost.localdomain> Content-Type: text/plain Date: Mon, 02 Apr 2007 14:56:08 -0700 Message-Id: <1175550968.22373.122.camel@localhost.localdomain> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Christoph Lameter Cc: Andi Kleen , linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, Martin Bligh , linux-mm@kvack.org, KAMEZAWA Hiroyuki List-ID: On Mon, 2007-04-02 at 14:28 -0700, Christoph Lameter wrote: > I do not care what its called as long as it > covers all the bases and is not a glaring performance regresssion (like > SPARSEMEM so far). I honestly don't doubt that there are regressions, somewhere. Could you elaborate, and perhaps actually show us some numbers on this? Perhaps instead of adding a completely new model, we can adapt the existing ones somehow. But, without some cold, hard, data, we mere mortals without the 1024-way machines can only guess. ;) -- Dave -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org